Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased]

Changed

#1891: Regenesis now preserves FuelBlockMerkleData and FuelBlockMerkleMetadata in the off-chain table. These tables are checked when querying message proofs.
#1886: Use ref to Block in validation code
#1876: Updated benchmark to include the worst scenario for CROO opcode. Also include consensus parameters in bench output.
#1879: Return the old behaviour for the discovery_works test.
#1848: Added version field to the Block and BlockHeader GraphQL entities. Added corresponding version field to the Block and BlockHeader client types in fuel-core-client.
#1873: Separate dry runs from block production in executor code, remove ExecutionKind and ExecutionType, remove thread_block_transaction concept, remove PartialBlockComponent type, refactor away inner functions.
#1900: Update the root README as fuel-core run no longer has --chain as an option. It has been replaced by --snapshot.

[Version 0.26.0]

Fixed

Breaking

#1868: Include the event_inbox_root in the header hash. Changed types of the transactions_count to u16 and message_receipt_count to u32 instead of u64. Updated the application hash root calculation to not pad numbers.
#1866: Fixed a runtime panic that occurred when restarting a node. The panic happens when the relayer database is already populated, and the relayer attempts an empty commit during start up. This invalid commit is removed in this PR.
#1871: Fixed block endpoint to return fetch the blocks from both databases after regenesis.
#1856: Replaced instances of Union with Enum for GraphQL definitions of ConsensusParametersVersion and related types. This is needed because Union does not support multiple Versions inside discriminants or empty variants.
#1870: Fixed benchmarks for the 0.25.3.
#1870: Improves the performance of getting the size of the contract from the InMemoryTransaction.
#1851: Provided migration capabilities (enabled addition of new column families) to RocksDB instance.

Added

#1853: Added a test case to verify the database's behavior when new columns are added to the RocksDB database.
#1860: Regenesis now preserves FuelBlockIdsToHeights off-chain table.

Changed

#1847: Simplify the validation interface to use Block. Remove Validation variant of ExecutionKind.
#1832: Snapshot generation can be cancelled. Progress is also reported.
#1837: Refactor the executor and separate validation from the other use cases

[Version 0.25.2]

Fixed

#1844: Fixed the publishing of the fuel-core 0.25.1 release.
#1842: Ignore RUSTSEC-2024-0336: rustls::ConnectionCommon::complete_io could fall into an infinite loop based on network

[Version 0.25.1]

Fixed

#1840: Fixed the publishing of the fuel-core 0.25.0 release.

[Version 0.25.0]

Fixed

#1821: Can handle missing tables in snapshot.
#1814: Bugfix: the iter_all_by_prefix was not working for all tables. The change adds a Rust level filtering.

Added

#1831: Included the total gas and fee used by transaction into TransactionStatus.
#1821: Propagate shutdown signal to (re)genesis. Also add progress bar for (re)genesis.
#1813: Added back support for /health endpoint.
#1799: Snapshot creation is now concurrent.
#1811: Regenesis now preserves old blocks and transactions for GraphQL API.

Changed

#1833: Regenesis of SpentMessages and ProcessedTransactions.
#1830: Use versioning enum for WASM executor input and output.
#1816: Updated the upgradable executor to fetch the state transition bytecode from the database when the version doesn't match a native one. This change enables the WASM executor in the "production" build and requires a wasm32-unknown-unknown target.
#1812: Follow-up PR to simplify the logic around parallel snapshot creation.
#1809: Fetch ConsensusParameters from the database
#1808: Fetch consensus parameters from the provider.

Breaking

#1826: The changes make the state transition bytecode part of the ChainConfig. It guarantees the state transition's availability for the network's first blocks. The change has many minor improvements in different areas related to the state transition bytecode:
- The state transition bytecode lies in its own file(state_transition_bytecode.wasm) along with the chain config file. The ChainConfig loads it automatically when ChainConfig::load is called and pushes it back when ChainConfig::write is called.
- The fuel-core release bundle also contains the fuel-core-wasm-executor.wasm file of the corresponding executor version.
- The regenesis process now considers the last block produced by the previous network. When we create a (re)genesis block of a new network, it has the height = last_block_of_old_netowkr + 1. It continues the old network and doesn't overlap blocks(before, we had old_block.height == new_genesis_block.hegiht).
- Along with the new block height, the regenesis process also increases the state transition bytecode and consensus parameters versions. It guarantees that a new network doesn't use values from the previous network and allows us not to migrate StateTransitionBytecodeVersions and ConsensusParametersVersions tables.
- Added a new CLI argument, native-executor-version, that allows overriding of the default version of the native executor. It can be useful for side rollups that have their own history of executor upgrades.
- Replaced:
```
         let file = std::fs::File::open(path)?;
         let mut snapshot: Self = serde_json::from_reader(&file)?;
```
  with a:
```
         let mut json = String::new();
         std::fs::File::open(&path)
             .with_context(|| format!("Could not open snapshot file: {path:?}"))?
             .read_to_string(&mut json)?;
         let mut snapshot: Self = serde_json::from_str(json.as_str())?;
```
  because it is 100 times faster for big JSON files.
- Updated all tests to use Config::local_node_* instead of working with the SnapshotReader directly. It is the preparation of the tests for the futures bumps of the Executor::VERSION. When we increase the version, all tests continue to use GenesisBlock.state_transition_bytecode = 0 while the version is different, which forces the usage of the WASM executor, while for tests, we still prefer to test native execution. The Config::local_node_* handles it and forces the executor to use the native version.
- Reworked the build.rs file of the upgradable executor. The script now caches WASM bytecode to avoid recompilation. Also, fixed the issue with outdated WASM bytecode. The script reacts on any modifications of the fuel-core-wasm-executor and forces recompilation (it is why we need the cache), so WASM bytecode always is actual now.
#1822: Removed support of Create transaction from debugger since it doesn't have any script to execute.
#1822: Use fuel-vm 0.49.0 with new transactions types - Upgrade and Upload. Also added max_bytecode_subsections field to the ConsensusParameters to limit the number of bytecode subsections in the state transition bytecode.
#1816: Updated the upgradable executor to fetch the state transition bytecode from the database when the version doesn't match a native one. This change enables the WASM executor in the "production" build and requires a wasm32-unknown-unknown target.

[Version 0.24.2]

Changed

Breaking

#1798: Add nonce to relayed transactions and also hash full messages in the inbox root.

Fixed

#1802: Fixed a runtime panic that occurred when restarting a node. The panic was caused by an invalid database commit while loading an existing off-chain database. The invalid commit is removed in this PR.
#1803: Produce block when da height haven't changed.
#1795: Fixed the building of the fuel-core-wasm-executor to work outside of the fuel-core context. The change uses the path to the manifest file of the fuel-core-upgradable-executor to build the fuel-core-wasm-executor instead of relying on the workspace.

[Version 0.24.1]

Added

#1787: Handle processing of relayed (forced) transactions
#1786: Regenesis now includes off-chain tables.
#1716: Added support of WASM state transition along with upgradable execution that works with native(std) and WASM(non-std) executors. The fuel-core now requires a wasm32-unknown-unknown target to build.
#1770: Add the new L1 event type for forced transactions.
#1767: Added consensus parameters version and state transition version to the ApplicationHeader to describe what was used to produce this block.
#1760: Added tests to verify that the network operates with a custom chain id and base asset id.
#1752: Add ProducerGasPrice trait that the Producer depends on to get the gas price for the block.
#1747: The DA block height is now included in the genesis state.
#1740: Remove optional fields from genesis configs
#1737: Remove temporary tables for calculating roots during genesis.
#1731: Expose schema.sdl from fuel-core-client.

Changed

Breaking

1785: Producer will only include DA height if it has enough gas to include the associate forced transactions.
#1771: Contract 'states' and 'balances' brought back into ContractConfig. Parquet now writes a file per table.
1779: Modify Relayer service to order Events from L1 by block index
#1783: The PR upgrade fuel-vm to 0.48.0 release. Because of some breaking changes, we also adapted our codebase to follow them:
- Implementation of Default for configs was moved under the test-helpers feature. The fuel-core binary uses testnet configuration instead of Default::default(for cases when ChainConfig was not provided by the user).
- All parameter types are enums now and require corresponding modifications across the codebase(we need to use getters and setters). The GraphQL API remains the same for simplicity, but each parameter now has one more field - version, that can be used to decide how to deserialize.
- The UtxoId type now is 34 bytes instead of 33. It affects hex representation and requires adding 00.
- The block_gas_limit was moved to ConsensusParameters from ChainConfig. It means the block producer doesn't specify the block gas limit anymore, and we don't need to propagate this information.
- The bytecodeLength field is removed from the Create transaction.
- Removed ConsensusParameters from executor config because ConsensusParameters::default is not available anymore. Instead, executors fetch ConsensusParameters from the database.
#1769: Include new field on header for the merkle root of imported events. Rename other message root field.
#1768: Moved ContractsInfo table to the off-chain database. Removed salt field from the ContractConfig.
#1761: Adjustments to the upcoming testnet configs:
- Decreased the max size of the contract/predicate/script to be 100KB.
- Decreased the max size of the transaction to be 110KB.
- Decreased the max number of storage slots to be 1760(110KB / 64).
- Removed fake coins from the genesis state.
- Renamed folders to be "testnet" and "dev-testnet".
- The name of the networks are "Upgradable Testnet" and "Upgradable Dev Testnet".
#1694: The change moves the database transaction logic from the fuel-core to the fuel-core-storage level. The corresponding issue described the reason behind it.

Technical details of implementation
- The change splits the KeyValueStore into KeyValueInspect and KeyValueMutate, as well the Blueprint into BlueprintInspect and BlueprintMutate. It allows requiring less restricted constraints for any read-related operations.
- One of the main ideas of the change is to allow for the actual storage only to implement KeyValueInspect and Modifiable without the KeyValueMutate. It simplifies work with the databases and provides a safe way of interacting with them (Modification into the database can only go through the Modifiable::commit_changes). This feature is used to track the height of each database during commits and even limit how commits are done, providing additional safety. This part of the change was done as a separate commit.
- The StorageTransaction is a StructuredStorage that uses InMemoryTransaction inside to accumulate modifications. Only InMemoryTransaction has a real implementation of the KeyValueMutate(Other types only implement it in tests).
- The implementation of the Modifiable for the Database contains a business logic that provides additional safety but limits the usage of the database. The Database now tracks its height and is responsible for its updates. In the commit_changes function, it analyzes the changes that were done and tries to find a new height(For example, in the case of the OnChain database, we are looking for a new Block in the FuelBlocks table).
- As was planned in the issue, now the executor has full control over how commits to the storage are done.
- All mutation methods now require &mut self - exclusive ownership over the object to be able to write into it. It almost negates the chance of concurrent modification of the storage, but it is still possible since the Database implements the Clone trait. To be sure that we don't corrupt the state of the database, the commit_changes function implements additional safety checks to be sure that we commit updates per each height only once time.
- Side changes:
  - The drop function was moved from Database to RocksDB as a preparation for the state rewind since the read view should also keep the drop function until it is destroyed.
  - The StatisticTable table lives in the off-chain worker.
  - Removed duplication of the Database from the dap::ConcreteStorage since it is already available from the VM.
  - The executor return only produced Changes instead of the storage transaction, which simplifies the interaction between modules and port definition.
  - The logic related to the iteration over the storage is moved to the fuel-core-storage crate and is now reusable. It provides an iterator method that duplicates the logic from MemoryStore on iterating over the BTreeMap and methods like iter_all, iter_all_by_prefix, etc. It was done in a separate revivable commit.
  - The MemoryTransactionView is fully replaced by the StorageTransactionInner.
  - Removed flush method from the Database since it is not needed after #1664.
#1693: The change separates the initial chain state from the chain config and stores them in separate files when generating a snapshot. The state snapshot can be generated in a new format where parquet is used for compression and indexing while postcard is used for encoding. This enables importing in a stream like fashion which reduces memory requirements. Json encoding is still supported to enable easy manual setup. However, parquet is preferred for large state files.

Snapshot command

The CLI was expanded to allow customizing the used encoding. Snapshots are now generated along with a metadata file describing the encoding used. The metadata file contains encoding details as well as the location of additional files inside the snapshot directory containing the actual data. The chain config is always generated in the JSON format.

The snapshot command now has the '--output-directory' for specifying where to save the snapshot.

Run command

The run command now includes the 'db_prune' flag which when provided will prune the existing db and start genesis from the provided snapshot metadata file or the local testnet configuration.

The snapshot metadata file contains paths to the chain config file and files containing chain state items (coins, messages, contracts, contract states, and balances), which are loaded via streaming.

Each item group in the genesis process is handled by a separate worker, allowing for parallel loading. Workers stream file contents in batches.

A database transaction is committed every time an item group is successfully loaded. Resumability is achieved by recording the last loaded group index within the same db tx. If loading is aborted, the remaining workers are shutdown. Upon restart, workers resume from the last processed group.

Contract States and Balances

Using uniform-sized batches may result in batches containing items from multiple contracts. Optimal performance can presumably be achieved by selecting a batch size that typically encompasses an entire contract's state or balance, allowing for immediate initialization of relevant Merkle trees.

Removed

#1757: Removed protobuf from everywhere since libp2p uses quick-protobuf.

[Version 0.23.0]

Added

#1713: Added automatic impl of traits StorageWrite and StorageRead for StructuredStorage. Tables that use a Blueprint can be read and written using these interfaces provided by structured storage types.
#1671: Added a new Merklized blueprint that maintains the binary Merkle tree over the storage data. It supports only the insertion of the objects without removing them.
#1657: Moved ContractsInfo table from fuel-vm to on-chain tables, and created version-able ContractsInfoType to act as the table's data type.

Changed

#1872: Added Eq and PartialEq derives to TransactionStatus and TransactionResponse to enable comparison in the e2e tests.
#1723: Notify about imported blocks from the off-chain worker.
#1717: The fix for the #1657 to include the contract into ContractsInfo table.
#1657: Upgrade to fuel-vm 0.46.0.
#1671: The logic related to the FuelBlockIdsToHeights is moved to the off-chain worker.
#1663: Reduce the punishment criteria for mempool gossipping.
#1658: Removed Receipts table. Instead, receipts are part of the TransactionStatuses table.
#1640: Upgrade to fuel-vm 0.45.0.
#1635: Move updating of the owned messages and coins to off-chain worker.
#1650: Add api endpoint for getting estimates for future gas prices
#1649: Add api endpoint for getting latest gas price
#1600: Upgrade to fuel-vm 0.45.0
#1633: Notify services about importing of the genesis block.
#1625: Making relayer independent from the executor and preparation for the force transaction inclusion.
#1613: Add api endpoint to retrieve a message by its nonce.
#1612: Use AtomicView in all services for consistent results.
#1597: Unify namespacing for libp2p modules
#1591: Simplify libp2p dependencies and not depend on all sub modules directly.
#1590: Use AtomicView in the TxPool to read the state of the database during insertion of the transactions.
#1587: Use BlockHeight as a primary key for the FuelsBlock table.
#1585: Let NetworkBehaviour macro generate FuelBehaviorEvent in p2p
#1579: The change extracts the off-chain-related logic from the executor and moves it to the GraphQL off-chain worker. It creates two new concepts - Off-chain and On-chain databases where the GraphQL worker has exclusive ownership of the database and may modify it without intersecting with the On-chain database.
#1577: Moved insertion of sealed blocks into the BlockImporter instead of the executor.
#1574: Penalizes peers for sending invalid responses or for not replying at all.
#1601: Fix formatting in docs and check that cargo doc passes in the CI.
#1636: Add more docs to GraphQL DAP API.

Breaking

#1725: All API endpoints now are prefixed with /v1 version. New usage looks like: /v1/playground, /v1/graphql, /v1/graphql-sub, /v1/metrics, /v1/health.
#1722: Bugfix: Zero predicate_gas_used field during validation of the produced block.
#1714: The change bumps the fuel-vm to 0.47.1. It breaks several breaking changes into the protocol:
- All malleable fields are zero during the execution and unavailable through the GTF getters. Accessing them via the memory directly is still possible, but they are zero.
- The Transaction doesn't define the gas price anymore. The gas price is defined by the block producer and recorded in the Mint transaction at the end of the block. A price of future blocks can be fetched through a new API nedopoint and the price of the last block can be fetch or via the block or another API endpoint.
- The GasPrice policy is replaced with the Tip policy. The user may specify in the native tokens how much he wants to pay the block producer to include his transaction in the block. It is the prioritization mechanism to incentivize the block producer to include users transactions earlier.
- The MaxFee policy is mandatory to set. Without it, the transaction pool will reject the transaction. Since the block producer defines the gas price, the only way to control how much user agreed to pay can be done only through this policy.
- The maturity field is removed from the Input::Coin. The same affect can be achieve with the Maturity policy on the transaction and predicate. This changes breaks how input coin is created and removes the passing of this argument.
- The metadata of the Checked<Tx> doesn't contain max_fee and min_fee anymore. Only max_gas and min_gas. The max_fee is controlled by the user via the MaxFee policy.
- Added automatic impl of traits StorageWrite and StorageRead for StructuredStorage. Tables that use a Blueprint can be read and written using these interfaces provided by structured storage types.
#1712: Make ContractUtxoInfo type a version-able enum for use in the ContractsLatestUtxotable.
#1657: Changed CROO gas price type from Word to DependentGasPrice. The dependent gas price values are dummy values while awaiting updated benchmarks.
#1671: The GraphQL API uses block height instead of the block id where it is possible. The transaction status contains block_height instead of the block_id.
#1675: Simplify GQL schema by disabling contract resolvers in most cases, and just return a ContractId scalar instead.
#1658: Receipts are part of the transaction status. Removed reason from the TransactionExecutionResult::Failed. It can be calculated based on the program state and receipts. Also, it is not possible to fetch receipts from the Transaction directly anymore. Instead, you need to fetch status and its receipts.
#1646: Remove redundant receipts from queries.
#1639: Make Merkle metadata, i.e. SparseMerkleMetadata and DenseMerkleMetadata type version-able enums
#1632: Make Message type a version-able enum
#1631: Modify api endpoint to dry run multiple transactions.
#1629: Use a separate database for each data domain. Each database has its own folder where data is stored.
#1628: Make CompressedCoin type a version-able enum
#1616: Make BlockHeader type a version-able enum
#1614: Use the default consensus key regardless of trigger mode. The change is breaking because it removes the --dev-keys argument. If the debug flag is set, the default consensus key will be used, regardless of the trigger mode.
#1596: Make Consensus type a version-able enum
#1593: Make Block type a version-able enum
#1576: The change moves the implementation of the storage traits for required tables from fuel-core to fuel-core-storage crate. The change also adds a more flexible configuration of the encoding/decoding per the table and allows the implementation of specific behaviors for the table in a much easier way. It unifies the encoding between database, SMTs, and iteration, preventing mismatching bytes representation on the Rust type system level. Plus, it increases the re-usage of the code by applying the same blueprint to other tables.

It is a breaking PR because it changes database encoding/decoding for some tables.

StructuredStorage

The change adds a new type StructuredStorage. It is a wrapper around the key-value storage that implements the storage traits(StorageInspect, StorageMutate, StorageRead, etc) for the tables with blueprint. This blueprint works in tandem with the TableWithBlueprint trait. The table may implement TableWithBlueprint specifying the blueprint, as an example:
```
impl TableWithBlueprint for ContractsRawCode {
    type Blueprint = Plain<Raw, Raw>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}
```
It is a definition of the blueprint for the ContractsRawCode table. It has a plain blueprint meaning it simply encodes/decodes bytes and stores/loads them into/from the storage. As a key codec and value codec, it uses a Raw encoding/decoding that simplifies writing bytes and loads them back into the memory without applying any serialization or deserialization algorithm.

If the table implements TableWithBlueprint and the selected codec satisfies all blueprint requirements, the corresponding storage traits for that table are implemented on the StructuredStorage type.

Codecs

Each blueprint allows customizing the key and value codecs. It allows the use of different codecs for different tables, taking into account the complexity and weight of the data and providing a way of more optimal implementation.

That property may be very useful to perform migration in a more easier way. Plus, it also can be a no_std migration potentially allowing its fraud proving.

An example of migration:
```
/// Define the table for V1 value encoding/decoding.
impl TableWithBlueprint for ContractsRawCodeV1 {
    type Blueprint = Plain<Raw, Raw>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}

/// Define the table for V2 value encoding/decoding.
/// It uses `Postcard` codec for the value instead of `Raw` codec.
///
/// # Dev-note: The columns is the same.
impl TableWithBlueprint for ContractsRawCodeV2 {
    type Blueprint = Plain<Raw, Postcard>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}

fn migration(storage: &mut Database) {
    let mut iter = storage.iter_all::<ContractsRawCodeV1>(None);
    while let Ok((key, value)) = iter.next() {
        // Insert into the same table but with another codec.
        storage.storage::<ContractsRawCodeV2>().insert(key, value);
    }
}
```
Structures

The blueprint of the table defines its behavior. As an example, a Plain blueprint simply encodes/decodes bytes and stores/loads them into/from the storage. The SMT blueprint builds a sparse merkle tree on top of the key-value pairs.

Implementing a blueprint one time, we can apply it to any table satisfying the requirements of this blueprint. It increases the re-usage of the code and minimizes duplication.

It can be useful if we decide to create global roots for all required tables that are used in fraud proving.
```
impl TableWithBlueprint for SpentMessages {
    type Blueprint = Plain<Raw, Postcard>;

    fn column() -> Column {
        Column::SpentMessages
    }
}
                 |
                 |
                \|/

impl TableWithBlueprint for SpentMessages {
    type Blueprint =
        Sparse<Raw, Postcard, SpentMessagesMerkleMetadata, SpentMessagesMerkleNodes>;

    fn column() -> Column {
        Column::SpentMessages
    }
}
```
Side changes

iter_all

The iter_all functionality now accepts the table instead of K and V generics. It is done to use the correct codec during deserialization. Also, the table definition provides the column.

Duplicated unit tests

The fuel-core-storage crate provides macros that generate unit tests. Almost all tables had the same test like get, insert, remove, exist. All duplicated tests were moved to macros. The unique one still stays at the same place where it was before.

StorageBatchMutate

Added a new StorageBatchMutate trait that we can move to fuel-storage crate later. It allows batch operations on the storage. It may be more performant in some cases.
#1573: Remove nested p2p request/response encoding. Only breaks p2p networking compatibility with older fuel-core versions, but is otherwise fully internal.

[Version 0.22.4]

Added

#1743: Added blacklisting of the transactions on the TxPool level.

      --tx-blacklist-addresses <TX_BLACKLIST_ADDRESSES>
          The list of banned addresses ignored by the `TxPool`
          
          [env: TX_BLACKLIST_ADDRESSES=]

      --tx-blacklist-coins <TX_BLACKLIST_COINS>
          The list of banned coins ignored by the `TxPool`
          
          [env: TX_BLACKLIST_COINS=]

      --tx-blacklist-messages <TX_BLACKLIST_MESSAGES>
          The list of banned messages ignored by the `TxPool`
          
          [env: TX_BLACKLIST_MESSAGES=]

      --tx-blacklist-contracts <TX_BLACKLIST_CONTRACTS>
          The list of banned contracts ignored by the `TxPool`
          
          [env: TX_BLACKLIST_CONTRACTS=]

[Version 0.22.3]

Added

#1732: Added Clone bounds to most datatypes of fuel-core-client.

[Version 0.22.2]

Added

#1729: Exposed the schema.sdl file from fuel-core-client. The user can create his own queries by using this file.

[Version 0.22.1]

Fixed

#1664: Fixed long database initialization after restart of the node by setting limit to the WAL file.

[Version 0.22.0]

Added

#1515: Added support of --version command for fuel-core-keygen binary.
#1504: A Success or Failure variant of TransactionStatus returned by a query now contains the associated receipts generated by transaction execution.

Breaking

#1531: Make fuel-core-executor no_std compatible. It affects the fuel-core crate because it uses the fuel-core-executor crate. The change is breaking because of moved types.
#1524: Adds information about connected peers to the GQL API.

Changed

#1517: Changed default gossip heartbeat interval to 500ms.
#1520: Extract executor into fuel-core-executor crate.

Fixed

Breaking

#1536: The change fixes the contracts tables to not touch SMT nodes of foreign contracts. Before, it was possible to invalidate the SMT from another contract. It is a breaking change and requires re-calculating the whole state from the beginning with new SMT roots.
#1542: Migrates information about peers to NodeInfo instead of ChainInfo. It also elides information about peers in the default node_info query.

[Version 0.21.0]

This release focuses on preparing fuel-core for the mainnet environment:

Most of the changes improved the security and stability of the node.
The gas model was reworked to cover all aspects of execution.
The benchmarking system was significantly enhanced, covering worst scenarios.
A new set of benchmarks was added to track the accuracy of gas prices.
Optimized heavy operations and removed/replaced exploitable functionality.

Besides that, there are more concrete changes:

Unified naming conventions for all CLI arguments. Added dependencies between related fields to avoid misconfiguration in case of missing arguments. Added --debug flag that enables additional functionality like a debugger.
Improved telemetry to cover the internal work of services and added support for the Pyroscope, allowing it to generate real-time flamegraphs to track performance.
Improved stability of the P2P layer and adjusted the updating of reputation. The speed of block synchronization was significantly increased.
The node is more stable and resilient. Improved DoS resistance and resource management. Fixed critical bugs during state transition.
Reworked the Mint transaction to accumulate the fee from block production inside the contract defined by the block producer.

FuelVM received a lot of safety and stability improvements:

The audit helped identify some bugs and errors that have been successfully fixed.
Updated the gas price model to charge for resources used during the transaction lifecycle.
Added no_std and 32 bit system support. This opens doors for fraud proving in the future.
Removed the ChainId from the PredicateId calculation, allowing the use of predicates cross-chain.
Improvements in the performance of some storage-related opcodes.
Support the ECAL instruction that allows adding custom functionality to the VM. It can be used to create unique rollups or advanced indexers in the future.
Support of transaction policies provides additional safety for the user. It also allows the implementation of a multi-dimensional price model in the future, making the transaction execution cheaper and allowing more transactions that don't affect storage.
Refactored errors, returning more detailed errors to the user, simplifying debugging.

Added

#1503: Add gtf opcode sanity check.
#1502: Added price benchmark for vm_initialization.
#1501: Add a CLI command for generating a fee collection contract.
#1492: Support backward iteration in the RocksDB. It allows backward queries that were not allowed before.
#1490: Add push and pop benchmarks.
#1485: Prepare rc release of fuel core v0.21
#1476: Add the majority of the "other" benchmarks for contract opcodes.
#1473: Expose fuel-core version as a constant
#1469: Added support of bloom filter for RocksDB tables and increased the block cache.
#1465: Improvements for keygen cli and crates
#1642: Added benchmark to measure the performance of contract state and contract ID calculation; use for gas costing.
#1457: Fixing incorrect measurement for fast(µs) opcodes.
#1456: Added flushing of the RocksDB during a graceful shutdown.
#1456: Added more logs to track the service lifecycle.
#1453: Add the majority of the "sanity" benchmarks for contract opcodes.
#1452: Added benchmark to measure the performance of contract root calculation when utilizing the maximum contract size; used for gas costing of contract root during predicate owner validation.
#1449: Fix coin pagination in e2e test client.
#1447: Add timeout for continuous e2e tests
#1444: Add "sanity" benchmarks for memory opcodes.
#1437: Add some transaction throughput tests for basic transfers.
#1436: Add a github action to continuously test beta-4.
#1433: Add "sanity" benchmarks for flow opcodes.
#1432: Add a new --api-request-timeout argument to control TTL for GraphQL requests.
#1430: Add "sanity" benchmarks for crypto opcodes.
#1426 Split keygen into a create and a binary.
#1419: Add additional "sanity" benchmarks for arithmetic op code instructions.
#1411: Added WASM and no_std compatibility.
#1405: Use correct names for service metrics.
#1400: Add releasy beta to fuel-core so that new commits to fuel-core master triggers fuels-rs.
#1371: Add new client function for querying the MessageStatus for a specific message (by Nonce).
#1356: Add peer reputation reporting to heartbeat code.
#1355: Added new metrics related to block importing, such as tps, sync delays etc.
#1339: Adds baseAssetId to FeeParameters in the GraphQL API.
#1331: Add peer reputation reporting to block import code.
#1324: Added pyroscope profiling to fuel-core, intended to be used by a secondary docker image that has debug symbols enabled.
#1309: Add documentation for running debug builds with CLion and Visual Studio Code.
#1308: Add support for loading .env files when compiling with the env feature. This allows users to conveniently supply CLI arguments in a secure and IDE-agnostic way.
#1304: Implemented submit_and_await_commit_with_receipts method for FuelClient.
#1286: Include readable names for test cases where missing.
#1274: Added tests to benchmark block synchronization.
#1263: Add gas benchmarks for ED19 and ECR1 instructions.

Changed

#1512: Internally simplify merkle_contract_state_range.
#1507: Updated chain configuration to be ready for beta 5 network. It includes opcode prices from the latest benchmark and contract for the block producer.
#1477: Upgraded the Rust version used in CI and containers to 1.73.0. Also includes associated Clippy changes.
#1469: Replaced usage of MemoryTransactionView by Checkpoint database in the benchmarks.
#1468: Bumped version of the fuel-vm to v0.40.0. It brings some breaking changes into consensus parameters API because of changes in the underlying types.
#1466: Handling overflows during arithmetic operations.
#1460: Change tracking branch from main to master for releasy tests.
#1454: Update gas benchmarks for opcodes that append receipts.
#1440: Don't report reserved nodes that send invalid transactions.
#1439: Reduced memory BMT consumption during creation of the header.
#1434: Continue gossiping transactions to reserved peers regardless of gossiping reputation score.
#1408: Update gas benchmarks for storage opcodes to use a pre-populated database to get more accurate worst-case costs.
#1399: The Relayer now queries Ethereum for its latest finalized block instead of using a configurable "finalization period" to presume finality.
#1397: Improved keygen. Created a crate to be included from forc plugins and upgraded internal library to drop requirement of protoc to build
#1395: Add DependentCost benchmarks for k256, s256 and mcpi instructions.
#1393: Increase heartbeat timeout from 2 to 60 seconds, as suggested in this issue.
#1392: Fixed an overflow in message_proof.
#1390: Up the ethers version to 2 to fix an issue with tungstenite.
#1383: Disallow usage of log crate internally in favor of tracing crate.
#1380: Add preliminary, hard-coded config values for heartbeat peer reputation, removing todo.
#1377: Remove DiscoveryEvent and use KademliaEvent directly in DiscoveryBehavior.
#1366: Improve caching during docker builds in CI by replacing gha
#1358: Upgraded the Rust version used in CI to 1.72.0. Also includes associated Clippy changes.
#1349: Updated peer-to-peer transactions API to support multiple blocks in a single request, and updated block synchronization to request multiple blocks based on the configured range of headers.
#1342: Add error handling for P2P requests to return None to requester and log error.
#1318: Modified block synchronization to use asynchronous task execution when retrieving block headers.
#1314: Removed types::ConsensusParameters in favour of fuel_tx:ConsensusParameters.
#1302: Removed the usage of flake and building of the bridge contract ABI. It simplifies the maintenance and updating of the events, requiring only putting the event definition into the codebase of the relayer.
#1293: Parallelized the estimate_predicates endpoint to utilize all available threads.
#1270: Modify the way block headers are retrieved from peers to be done in batches.

Breaking

#1506: Added validation of the coin's fields during block production and validation. Before, it was possible to submit a transaction that didn't match the coin's values in the database, allowing printing/using unavailable assets.
#1491: Removed unused request and response variants from the Gossipsub implementation, as well as related definitions and tests. Specifically, this removes gossiping of ConsensusVote and NewBlock events.
#1472: Upgraded fuel-vm to v0.42.0. It introduces transaction policies that changes layout of the transaction. FOr more information check the v0.42.0 release.
#1470: Divide DependentCost into "light" and "heavy" operations.
#1464: Avoid possible truncation of higher bits. It may invalidate the code that truncated higher bits causing different behavior on 32-bit vs. 64-bit systems. The change affects some endpoints that now require lesser integers.
#1432: All subscriptions and requests have a TTL now. So each subscription lifecycle is limited in time. If the subscription is closed because of TTL, it means that you subscribed after your transaction had been dropped by the network.
#1407: The recipient is a ContractId instead of Address. The block producer should deploy its contract to receive the transaction fee. The collected fee is zero until the recipient contract is set.
#1407: The Mint transaction is reworked with new fields to support the account-base model. It affects serialization and deserialization of the transaction and also affects GraphQL schema.
#1407: The Mint transaction is the last transaction in the block instead of the first.
#1374: Renamed base_chain_height to da_height and return current relayer height instead of latest Fuel block height.
#1367: Update to the latest version of fuel-vm.
#1363: Change message_proof api to take nonce instead of message_id
#1355: Removed the metrics feature flag from the fuel-core crate, and metrics are now included by default.
#1339: Added a new required field called base_asset_id to the FeeParameters definition in ConsensusParameters, as well as default values for base_asset_id in the beta and dev chain specifications.
#1322: The debug flag is added to the CLI. The flag should be used for local development only. Enabling debug mode: - Allows GraphQL Endpoints to arbitrarily advance blocks. - Enables debugger GraphQL Endpoints. - Allows setting utxo_validation to false.
#1318: Removed the --sync-max-header-batch-requests CLI argument, and renamed --sync-max-get-txns to --sync-block-stream-buffer-size to better represent the current behavior in the import.
#1290: Standardize CLI args to use - instead of _.
#1279: Added a new CLI flag to enable the Relayer service --enable-relayer, and disabled the Relayer service by default. When supplying the --enable-relayer flag, the --relayer argument becomes mandatory, and omitting it is an error. Similarly, providing a --relayer argument without the --enable-relayer flag is an error. Lastly, providing the --keypair or --network arguments will also produce an error if the --enable-p2p flag is not set.
#1262: The ConsensusParameters aggregates all configuration data related to the consensus. It contains many fields that are segregated by the usage. The API of some functions was affected to use lesser types instead the whole ConsensusParameters. It is a huge breaking change requiring repetitively monotonically updating all places that use the ConsensusParameters. But during updating, consider that maybe you can use lesser types. Usage of them may simplify signatures of methods and make them more user-friendly and transparent.

Removed

Breaking

#1484: Removed --network CLI argument. Now the name of the network is fetched form chain configuration.
#1399: Removed relayer-da-finalization parameter from the relayer CLI.
#1338: Updated GraphQL client to use DependentCost for k256, mcpi, s256, scwq, swwq opcodes.
#1322: The manual_blocks_enabled flag is removed from the CLI. The analog is a debug flag.

Files

CHANGELOG.md

Latest commit

History

CHANGELOG.md

File metadata and controls

Change Log

[Unreleased]

Changed

[Version 0.26.0]

Fixed

Breaking

Added

Changed

[Version 0.25.2]

Fixed

[Version 0.25.1]

Fixed

[Version 0.25.0]

Fixed

Added

Changed

Breaking

[Version 0.24.2]

Changed

Breaking

Fixed

[Version 0.24.1]

Added

Changed

Breaking

Technical details of implementation

Snapshot command

Run command

Contract States and Balances

Removed

[Version 0.23.0]

Added

Changed

Breaking

StructuredStorage

Codecs

Structures

Side changes

iter_all

Duplicated unit tests

StorageBatchMutate

[Version 0.22.4]

Added

[Version 0.22.3]

Added

[Version 0.22.2]

Added

[Version 0.22.1]

Fixed

[Version 0.22.0]

Added

Breaking

Changed

Fixed

Breaking

[Version 0.21.0]

Added

Changed

Breaking

Removed

Breaking

`iter_all`

`StorageBatchMutate`